public static TransactionResultTypes IsPurchaseValid(CoreAccount payer, ServiceAccount receiver, ChainInfo chainInfo, PurchaseServiceTransaction transaction)
{
if (chainInfo == null)
{
return(TransactionResultTypes.ChainNotFound);
}
if (payer == null || !payer.CanPurchase(transaction.Price))
{
return(TransactionResultTypes.InsuficientBalance);
}
if (receiver == null)
{
return(TransactionResultTypes.InvalidServiceAccount);
}
if (!chainInfo.IsPurchaseValid(transaction.PurchaseGroupId, transaction.PurchaseItemId, transaction.Price))
{
return(TransactionResultTypes.PurchaseNotFound);
}
if (!receiver.CanPurchaseItem(transaction, chainInfo))
{
return(TransactionResultTypes.CannotPurchase);
}
return(TransactionResultTypes.Ok);
}